Molecular cartography of residue pesticides on grape surface in 3D by ambient ionization tandem mass spectrometry

Hung Su, Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan
Tiao-Lai Huang, Department of Psychiatry, Chang Gung Memorial Hospital–Kaohsiung Medical Center and Chang Gung University College of Medicine, Kaohsiung, Taiwan
Cheng-Ting Chi, Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan
Yi-Tzu Cho, Department of Cosmetic Applications and Management, Yuh-Ing Junior College of Health Care & Management, Kaohsiung, Taiwan
Chi-Wei Lee, Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung, TaiwanFollow
Jingyueh Jeng, Department of Medicinal Chemistry, Chia Nan University of Pharmacy and Science, Tainan, TaiwanFollow
Jentaie Shiea, Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, TaiwanFollow

Keywords

grape, molecular cartography, residual pesticide, sampling probe, thermal desorption-electrospray ionization tandem mass spectrometry

Abstract

Thermal desorption-electrospray ionization tandem mass spectrometry (TD-ESI/MS/MS) was used to characterize the residual pesticides that were collected from the surface of a grape with metallic sampling probes. Fungicides, insecticides, and miticides were detected, where results were validated by simple solvent extraction followed by gas chromatography tandem mass spectrometry and liquid chromatography tandem mass spectrometry analyses. To explore the distribution of pesticide residues on grape surfaces, 149 locations of a grape surface were collected and followed by TD-ESI/MS/MS analysis. The molecular cartography was then generated from analysis of residual pesticides on the grape surface in 3D.

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Recommended Citation

Su, Hung; Huang, Tiao-Lai; Chi, Cheng-Ting; Cho, Yi-Tzu; Lee, Chi-Wei; Jeng, Jingyueh; and Shiea, Jentaie (2021) "Molecular cartography of residue pesticides on grape surface in 3D by ambient ionization tandem mass spectrometry," Journal of Food and Drug Analysis: Vol. 29 : Iss. 4 , Article 16.
Available at: https://doi.org/10.38212/2224-6614.3385